Question

Match the ores given in Column I with their composition given in Column II.

Column I		Column II
A	Malachite	p	Sulphide ore
B	Azurite	q	Carbonate ore
C	Chalcopyrites	r	Oxide ore
D	Copper glance	s	Roasting

• A. A - (s) , B - (p) , C - (q) , D - (q,s)
• B. A - (p,q) , B - (q) , C - (p,q) , D - (s)
• C. A - (q) , B - (q) , C - (p,s) , D - (p,s)
• D. A - (s) , B - (r) , C - (s) , D - (p)

Answer 1

Answer: (C)

Malachite $- CuCO _{3} \cdot Cu ( CO )_{2} $ (Carbonate ore)
Azurite $-2 CuCO _{3} \cdot Cu ( OH )_{2}$ (Carbonate ore)
Coper pyrites $- CuFeS _{2} $ (Sulphide ore so roasted)
Copper glance $- Cu _{2} S $ (Sulphide ore so roasted)
Thus, $A \rightarrow q , B \rightarrow q , C \rightarrow p , s , D \rightarrow p , s$